Improvement in coal-oil stoves



` c. TRUESDALB.

Goal-0i] Stove.

No. 218,089. Patented July 29,1879.-

FILLL Elven- 0,11

N. PETERS. PHOTO-LITHOGRAPHER| WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

CHARLES TRUESDALE, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF HIS RIGHTTO WILLIAM RESOR 85 OO., OF SAME PLACE.

IMPROVEMENT IN COAL-OIL STOVES.

Specification formingpart of Letters Patent No. 218,089, dated July 29,1879; application filed April 21, 1879.

To all whom it may concern:

Be it known that I, CHARLEs TRUESDALE, of Cincinnati, Hamilton county,Ohio, have invented certain new and useful Improvem ents in Goal-OilStoves, of which the following is a specification.

This invention relates to those wickless stoves which are provided witha filling of asbestus or other porous but non-combustible material tocontain the charge of coal-oil or other suitable burning-fluid; and thefirst part of my improvements' comprises a novel arrangement ofair-inlets and ventage for the purpose of insuring the most completecombustion. These air-inlets, of which two are preferably employed, aresituated at opposite sides of the box or pan, or other receptacle thatcontains the aforesaid filling, and near the upper end of the same,while the ventage or dischargeue consists of one or more slots orenlarged perforations in the top plate of said box. By this arrangementair enters the stove from two opposite directions, and sweeps across thesurface of the hydrocarbon before escaping at the ventage where theflames issue. Consequently the flames are surrounded with currents ofair that not only promote combustion, but prevent any accumulation ofsoot 0n the walls of the narrow ventage, which accumulation of soot isfurther guarded against by making the mouth or receiving end of the ventage as capacious as thc size of the stove will permit. But this featureof my invention may be modified by providing the box with a singleair-inlet, which inlet may be made in the top plate of the apparatus,the receiving end or mouth of the ventage in this form of stove being ascapacious as possible; or this box may have a single air-inlet either attop or on one side, while a second inlet may be arranged in thesummer-stove or other cooking or heating apparatus that contains saidbox.

The second part of my invention comprises a peculiar combination ofslotted or perforated back plate, diaphragm, and vented flue-plate,whereby the above described device is rendered capable of being readilyapplied to a portable summelkstove, as hereinafter more fully described.

In the annexed drawings, Figure 1 is a longitudinal section through asummerstove provided with my oil-burning attachment; and Fig. 2 is atransverse section of the same, taken in the plane of the ventage. Fig.3 is a sectionized elevation of the oil-receptacle detached from thestove, and Fig. 4 is a plan of said receptacle. Fig. 5 is a verticalsection through a form of oil-receptacle adapted for general use.

The more simple form of my wickless stove, as represented in Fig. 5,consists, essentially, of a box or pan or other receptacle, A, of anysuitable size and shape, said box being illed almost full with asbestus,or mineral Woolf7 or other absorbent but refractory material ormaterials, B. Sufficient space, however, is left between the surface ofthis filling and top plate, C, of the box to allow a free passage ofair. This stove is pierced on opposite sides or ends, and near the top,with slots or apertures or other air-inlets a a', while one or moreslots, c, in the top plate serves as the ventage for said stove; orthese inlets a a may be made in said top plate, C.

The ventage c may be guarded on all sides by a ange or wall projecting aslight distance from the under side of plate C, so as to form adepending neck or collar; but whatever construction lnay be adopted forthis part of the apparatus, care must be taken to have the lower end ormouth of said ventage as .capacious as practicable, and not contract itsarea by means of small apertures or passages, as they would obstruct theupward flow of air, and thereby cause an accumulation of soot in theventage; but where this slot c is quite long, it may be divided atsuitable intervals by transverse bars or bridges, provided they do notencroach on the area of the ventage to such an extent as to cause thelatter to be soon choked up with soot.

To use this device, it is only necessary to charge the filling B withsufficient coal-oil or other burninguid, and then light the same, and assoon as the oil i gnites the lames escape through ventage c, the airthat supports combustion being drawn in at slots a a', as indicated byarrows. These currents of air, entering from opposite sides of thestove, completely surround the name at ventage c, and thus produce themost perfect combustion. Fur therinore, these currents ot' air preventany actual contact of the llames with the walls or sides of the ventage,and consequently there is iio accumulation of soot on said walls.

This form of stove is adapted for a great variety of purposes; but. illorder to render the same useful in summer-stoves, I prefer theconstruction shown more fully in Fig. 1. Here the receptacle A isrepresented as provided at top with a diaphragm, l), which may besecured to said receptacle with screws or rivets d.

This diaphragm does ilot extend coillpletely across from the front tothe back ot' receptacle A; but sutlicient spaces are left to afford twoslots, E F, the area ot the rear slot, F, being controlled by a cut-ott'or regulator, G, having a handle, g.

H is the retaining device, and h the guidingslot ot' said regulator. Iis the handle of receptacle A, which latter is adapted to occupy acliailiber forlned by the side plates, J J', line-plate K, and backplate, L, of a slilliinerstove, the ventage c being iiow iliade illtlue-plate K, the lower end of said ventage heilig free from suchobstructions as would materially contract the area of slot c, aiid causean accumulation ol soot in the same..

Back plate, L, has a slot, I, which performs the function of inlet u',(seen in Fig. 5,) while au opeliiiig, M, in the l'ront ot' the summer-Stove takes the place of the other inlet, a.

Interposed between plate L and oveli N is an imperforatc plate, U, apassage, l, beilig left between said plates, into which passage airenters through proper openingsj in the side plates, J.

Ris the top plate of the stove, alid S S are customarylids of' the same.T is the descending or rear flue, and U is a circular tlange or neckadapted to eiiter either of the opeiiillgs of an ordinary coolestove.

To ilse this form of apparatus, the filling B is first saturated withcoal-oil, and receptacle A is tlleli placed in the chamber at the frontend of the sunllller-stove, after which act the oil is ignited. Thellames now escape almost wholly through the rear slot, F, thence up atventage c into flue Y, aild down the rear flue, T, into the cook-stove,thus thoroughly heating any vessels that may be applied to top plate, R,or placed in oven N.

When the stove is in action, a current of air enters at opeliiiig M andthen divides, one portion of the same passing down through slot E, andthence iluder diaphragm D to the rear slot., F, while the other portionof said current tlows rearwardly above the cut-off G. At the saule timea separate aild distinct current of air enters at opening j, ascendswithin passage P to slot l, and then escapes at ventage c.

Itwill thils be seen that the apparatus illustrated in Fig. 1 operatesin precisely the same manner as the more simple form of device shown illFig. -that is to say, the llames are surrounded by currents ot' air thatpromote conlbustion and prevent the accuinulation ot' soot in ventage c.

It some cases it may be advisable to admit a currentof' air or jets ofthe sameA into flue V, immediately behind or above the ventage c, or atsome other locality.

As my form of receptacleA allows the burning-Huid to be consumed in theopen air, and not in a closed vessel, it is evident there can be noaccumulation of gas in the apparatus,l

and, consequently, an explosion of the stove is impossible.

Finally, the wickless devices seen li Figs. 3 and 5 may be employed withany kind of cooking or heating apparatus, or for any other purpose.

I am aware it is not new to charge a coaloil stove with asbestus orother refractory fillings, and cause the products of combustion toescape through a chimney whose lower end is perforated to admit thegases, as such a device is seen in Letters Patent No. 193,089, issuedJuly 17, 187 7, to. J. J. Jarves.

Such being the state of the art, my claim to this feature ot' theinvention is expressly limited to a wickless coal-oil stove whosetluidreceptacle is adapted to contain a refractory filling, and has oneor more air-inlets and one or more ventages, the mouths ot said ventagcsbeing tree from small apertures or chan iicls, ill order that theproducts of combiiston lnay have unobstructed egress from saidreceptacle, as herein described.

I claim as my invention- 1. A wickless coal-oil stove consisting of areceptacle, A, charged with a suitable refractory filling that contaiilsthe burning duid, said receptacle being piovided with one or moreair-inlets, a, and one or more ventages, c, which ventages haveuliobstructed or opeil mouths, as herein described.

2. The coal-oil stove A, having a diaphragm, D, two slots, E F, and anadjustable regulator, G, as herein described.

3. The oil-receptacle A D E F, combilied with the slotted back plate, Ll, flue-plate K, and ventage c of a summer-stove, as ,herein described.

4. The combination, in a suminer-stove, of oil-receptacle A D E F,slotted back plate, L l, flue-plate K, veiltage c, passage P, and inletj, as herein described.

In testimony' of which invention I hereunto set my hand.

CHARLES TRUESDALE.

Witnesses: 4

J AMES H. LAYMAN, RANKIN D. J oNEs.

